package com.qd.panda.service.func;

import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.RedisTemplateUtil;
import com.qd.common.panda.domain.entity.func.ChannelEnableDTO;
import com.qd.common.sys.enums.BaseTableEnum;
import com.qd.common.panda.domain.entity.func.ChannelDTO;
import com.qd.panda.mapper.func.ChannelMapper;
import com.qd.panda.model.Channel;
import com.qd.system.service.dict.MbUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;

import static java.util.stream.Collectors.toList;

/**
 * 渠道推广
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class ChannelService extends BaseService<ChannelMapper, Channel> {

    private static final String PREFIX_ID = "panda_channel_channelCode_{0}";

    private final RedisTemplateUtil<Channel> redisTemplateUtil;

    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public ChannelDTO save(ChannelDTO dto) {
        validator(dto);
        dto.setChannelCode(createChannelCode());
        final Channel model = dtoToModel(dto);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public ChannelDTO update(ChannelDTO dto) {
        validator(dto);
        final Channel historyModel = Optional.ofNullable(getById(dto.getChannelCode())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        final Channel model = dtoToModel(dto);
        try {
            if (super.updateById(model)) {
                return modelToDto(model);
            }
            throw new ApiException("更新失败");
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
            model.freeData();
        }
    }

    /**
     * 删除，单个
     *
     * @param channelCode 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String channelCode) {
        final Channel historyModel = Optional.ofNullable(getById(channelCode)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            if (!super.removeById(channelCode)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
        }
    }

    /**
     * 批量删除
     *
     * @param ids 主键集合
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeBatchIds(List<String> ids) {
        final List<Channel> historyModelList = checkIds(ids);
        try {
            if (!super.removeByIds(ids)) {
                throw new ApiException("批量删除失败");
            }
        } finally {
            clearCaches(historyModelList);
            historyModelList.clear();
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(ChannelDTO dto) {
        final QueryWrapper<Channel> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param channelCode 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String channelCode) {
        boolean exists = false;
        if (StringUtils.hasLength(channelCode)) {
            final Channel model = getById(channelCode);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param channelCode 主键
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public Channel getById(String channelCode) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, channelCode);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(channelCode), Channel.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param channelCode 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public ChannelDTO getByIdDto(String channelCode) {
        return Optional.ofNullable(getById(channelCode)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public Channel getOne(ChannelDTO dto) {
        final QueryWrapper<Channel> queryWrapper = createQueryWrapper(dto);
        Channel model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public ChannelDTO getOneDto(ChannelDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    @Transactional(readOnly = true)
    public List<Channel> getList(ChannelDTO dto) {
        final QueryWrapper<Channel> queryWrapper = createQueryWrapper(dto);
        final List<Channel> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<ChannelDTO> getListDto(ChannelDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 分页数据
     *
     * @param page 分页对象
     * @param dto  查询参数
     * @return 分页信息
     */
    @Transactional(readOnly = true)
    public IPage<ChannelDTO> page(Page<Channel> page, ChannelDTO dto) {
        final QueryWrapper<Channel> queryWrapper = createQueryWrapper(dto);
        Page<Channel> iPage = baseMapper.selectPage(page, queryWrapper);
        Optional.ofNullable(iPage.getRecords()).ifPresent(this::modelToDtoList);
        queryWrapper.clear();
        return iPage.convert(this::modelToDto);
    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(Channel model) {
        if (null == model) {
            return;
        }
        redisTemplateUtil.deleteByKey(RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getChannelCode()));
    }

    /**
     * 批量清空缓存
     *
     * @param list 数据库对象
     */
    public void clearCaches(List<Channel> list) {
        if (null == list || list.isEmpty()) {
            return;
        }
        List<String> ids = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getChannelCode())).collect(toList());
        if (!ids.isEmpty()) {
            redisTemplateUtil.deleteByKey(ids);
            ids.clear();
        }
    }

    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public ChannelDTO modelToDto(Channel model) {
        if (null == model) {
            return null;
        }
        final ChannelDTO dto = new ChannelDTO();
        dto.setChannelCode(model.getChannelCode());
        dto.setChannelName(model.getChannelName());
        dto.setContact(model.getContact());
        dto.setContactPhone(model.getContactPhone());
        dto.setNote(model.getNote());
        dto.setAddTime(model.getAddTime());
        dto.setUpdateTime(model.getUpdateTime());
        dto.setEnable(model.getEnable());
        buildDisplay(dto);
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public Channel dtoToModel(ChannelDTO dto) {
        if (null == dto) {
            return null;
        }
        final Channel model = new Channel();
        model.setChannelCode(dto.getChannelCode());
        model.setChannelName(dto.getChannelName());
        model.setContact(dto.getContact());
        model.setContactPhone(dto.getContactPhone());
        model.setNote(dto.getNote());
        model.setAddTime(dto.getAddTime());
        model.setUpdateTime(dto.getUpdateTime());
        model.setEnable(dto.getEnable());
        return model;
    }

    /**
     * 码表转换
     *
     * @param dto 页面对象
     */
    public void buildDisplay(ChannelDTO dto) {
        if(StringUtils.hasLength(dto.getEnable())){
            dto.setEnableDisplay(MbUtil.idToDisplay(dto.getEnable()));
        }
    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<ChannelDTO> modelToDtoList(List<Channel> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<Channel> dtoToModelList(List<ChannelDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<Channel> createQueryWrapper(ChannelDTO dto) {
        final QueryWrapper<Channel> queryWrapper = new QueryWrapper<>();
        if (null != dto) {
            if (StringUtils.hasLength(dto.getChannelCode())) {
                queryWrapper.eq("channel_code", dto.getChannelCode());
            }
            if (StringUtils.hasLength(dto.getChannelName())) {
                queryWrapper.eq("channel_name", dto.getChannelName());
            }
            if (StringUtils.hasLength(dto.getContact())) {
                queryWrapper.eq("contact", dto.getContact());
            }
            if (StringUtils.hasLength(dto.getContactPhone())) {
                queryWrapper.eq("contact_phone", dto.getContactPhone());
            }
            if (StringUtils.hasLength(dto.getEnable())) {
                queryWrapper.eq("enable", dto.getEnable());
            }
        }
        queryWrapper.orderByDesc("add_time");
        return queryWrapper;
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     * @return 主键查询出来的集合
     */
    public List<Channel> checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            throw new ApiException("ids不能为空");
        }
        final List<Channel> list = super.listByIds(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        if (ids.size() == list.size()) {
            return list;
        }
        List<String> dbIds = list.stream().map(Channel::getChannelCode).collect(toList());
        final List<String> notExistsList = ids.stream().filter(id -> !dbIds.contains(id)).collect(toList());
        dbIds.clear();
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
        return list;
    }

    @Transactional(readOnly = true)
    public String createChannelCode() {
        String channelCode = RandomUtil.randomString(8);
        boolean exists = super.isExists(channelCode);
        if (exists) {
            createChannelCode();
        }
        return channelCode;
    }


    public void validator(ChannelDTO dto) {
        if (MbUtil.isNotExists(dto.getEnable(), BaseTableEnum.SF)) {
            throw new ApiException("是否启用值错误");
        }
    }

    @Transactional(readOnly = true)
    public String idToDisplay(String channelCode) {
        String display = "";
        if (StringUtils.hasLength(channelCode)) {
            display = Optional.ofNullable(getById(channelCode)).map(Channel::getChannelName).orElse("");
        }
        return display;
    }

    @Transactional(rollbackFor = Exception.class)
    public void enable(ChannelEnableDTO dto) {
        if (MbUtil.isNotExists(dto.getEnable(), BaseTableEnum.SF)) {
            throw new ApiException("是否启用值错误");
        }
        for (String id : dto.getIds()) {
            ChannelDTO channelDTO = getByIdDto(id);
            if (null == channelDTO) {
                throw new ApiException("主键ID错误[" + id + "]");
            }
            if (!channelDTO.getEnable().equals(dto.getEnable())) {
                channelDTO.setEnable(dto.getEnable());
                update(channelDTO);
            }
            channelDTO.freeData();
        }
    }
}